The effect of water and reductants on the release of nitrogen oxides stored on BaO/Al2O3

被引：49

作者：

Cant, NW ^{[1
]}

Patterson, MJ ^{[1
]}

机构：

[1] Macquarie Univ, Dept Chem, N Ryde, NSW 2109, Australia

来源：

CATALYSIS LETTERS | 2003年 / 85卷 / 3-4期

基金：

澳大利亚研究理事会;

关键词：

NOx storage catalysts; barium oxide; aluminum oxide; decomposition of stored nitrate; reduction of stored nitrate;

D O I：

10.1023/A:1022129310511

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of water and reductants (CO and H-2) on the decomposition of NOx stored on BaO/Al2O3 at 300degreesC has been investigated. Water eliminates the initial rapid total uptake of NO2 but has little effect on the subsequent formation of nitrates that is accompanied by evolution of NO. Water hinders liberation of NO2 and NO during temperature-programme decomposition of stored NOx. Both CO and H-2 lower the temperatures required for decomposition through reduction of NO2 to NO and N-2 thus restricting NO2 readsorption. The rate of reduction is lower with H-2 than with CO.

引用

页码：153 / 157

页数：5

共 14 条

[1] NOx release from a noble metal/BaO catalyst:: dependence on gas composition [J].